What Thickness Plywood Should I Use?

What Thickness Plywood Should I Use?

Plywood can be used for so many applications that it can sometimes feel almost overwhelming when trying to decide on the right thickness for the task at hand. Weirdly there isn't much information online to help you pick either. We stock a vast range of plywood here at PS Timber, so we feel like it's our moral obligation to provide some insight on the various sizes and applications. In this blog we will be focusing on Hardwood Plywood.


3.6mm Hardwood Plywood
This is the thinnest hardwood plywood sheet that we stock. It's most commonly used for boxing in, fascias and soffits, signage, packing cases, concrete formwork and much more.
We know it's a bit strange but one of our favourite applications for this product is van and trailer linings - it's aesthetically pleasing ok?!

3.6mm Hardwood Ply is typically laid to protect the floor surface - it's ideal if you’re sprucing up your camper or trying to prevent scuffing your work van. Due to it being 3.6mm it is more flexible than our other sheets but it’s a firm favourite amongst our DIY’ers and Traders. 

5.5mm Hardwood Plywood

This product is super popular with flooring companies, it’s normally used by floor fitters as subflooring or to level out existing floorboards where a flat level floor is required.

This item can also be used for van and trailer linings when 3.6mm is deemed not quite thick enough. It can also be used for panelling, shelving, storage boxes and drawer linings. We supply a lot of Model Railway clubs with these sheets, as they're a great foundation to build the railways on - with offcuts being used to create scenery and other features such as stations.

9mm Hardwood Plywood
9mm ply is well known as a staple product for wall sheathing, loft flooring and general construction. It can also be used to build under stair storage and cupboards - which is super handy if you need to make the most out of the space you have.
9mm Plywood can also be used as an alternative to MDF for wall panelling. There’s been a real resurgence in the panelling trend and we’re really enjoying seeing all of the beautiful panelling projects that our customers have created so far!

12mm Hardwood Plywood

12mm Ply is often used by furniture makers to create drawers and cabinets, we've seen some beautiful creations using our 12mm Russian Birch Plywood - which has been incredibly popular amongst our joiner clientele.

12mm Hardwood Plywood is the perfect thickness for modular shelving too - it’s lightweight but not too clunky - which is ideal if you’re looking to make contemporary hexagonal shelving like the picture below.

Due to our 12mm Hardwood Plywood being a structural product - it can be used in sheds for roofing and flooring too. An interesting application for 12mm Ply is Plywood pegboards - a quirky addition to any home, plus they’re super easy to build.

15mm Hardwood Plywood

Strangely, 15mm Plywood is quite an unusual thickness but it’s one of our most popular products. It has a broad range of uses and we’ve included some of our favourites.

For the little adventure seekers among us 15mm Ply is sturdy enough to be used as a children’s climbing wall (if you’re looking to build an adult version we would strongly recommend using 18mm as a minimum). 

However the best project we've seen using our 15mm Hardwood Plywood was made by Sam Harris - one of our incredibly talented customers. Sam used our 15mm Hardwood Ply to create the amazing skate ramp below! And he’s only 14 years old! (it's worth mentioning that Sam is not a golden Retriever)

18mm Hardwood Plywood

In terms of volume, this product is our bread and butter - we're well known for it. Strong, durable and it boasts a plethora of different applications. This can be used to build dining tables, office desks, media consoles, door panels, coffee tables and so much more.

We really love the aesthetic of 18mm Plywood headboards at the moment, especially with shelving integrated such as the one below.  

Our personal favourite is this insect and bee hotel, curated using 18mm Hardwood Plywood for an outdoor feature at a local school - made by the very talented Carl at Freedom Joinery in Fareham.

25mm Hardwood Plywood

Due to the stability and strength of 25mm plywood it’s perfect for applications that require a sturdy material. This product is commonly used for table tops, flooring and desks. They’re typically used in the construction sector as flooring in new builds, as well as for furniture and kitchens. Perhaps you’re looking for a strong sheet of ply to build an outdoor dining table for your garden - look no further, 25mm Hardwood Plywood is what you need - as long as it’s treated and sealed correctly! 

Curious about plywood cut to size?

We hope this article helps and if you have any questions please don't hesitate to get in touch - / 01329 283306